515222256054 has 48 divisors (see below), whose sum is σ = 1138965226560. Its totient is φ = 155255694000.

The previous prime is 515222256047. The next prime is 515222256089. The reversal of 515222256054 is 450652222515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1852372 + ... + 2112279.

It is an arithmetic number, because the mean of its divisors is an integer number (23728442220).

Almost surely, 2^515222256054 is an apocalyptic number.

515222256054 is an abundant number, since it is smaller than the sum of its proper divisors (623742970506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515222256054 is a wasteful number, since it uses less digits than its factorization.

515222256054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964857 (or 3964846 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 515222256054 its reverse (450652222515), we get a palindrome (965874478569).

The spelling of 515222256054 in words is "five hundred fifteen billion, two hundred twenty-two million, two hundred fifty-six thousand, fifty-four".